Device for operating elevator landing-doors



No. 624,898. Patented May l6, I899u E. G. AKEBS. DEVICE FOR OPERATINGELEVATOR LANDING DOORS.

(Application filed Feb. 8, 1899.)

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No. 624,898. Patented May 16, I899.

E, C. AKEBS. DEVICE FOR OPERATING ELEVATOR LANDING DOORS.

(Application filed Feb. 8, 1899,) (No Model.) 2 Sheets-Sheet 2.

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"ATENT OFFICE.

EARL O. AKERS, OF PORT HURON, MICHIGAN.

DEVICE FOR OPERATING ELEVATOR LANDING-DOORS.

SPECIFICATION forming part of Letters Patent No. 624,898, dated May 16,1899. Application r ry 8,1899. Serial No. 704.903. (NomodeL) To all whomit may concern:

Be it known that I, EARL O. AKERS, a citizen of the United States,residing at Port Huron, in the county of St. Clair and State ofMichigan, have invented certain new and useful Improvements in Devicesfor Operating Elevator Landing-Doors; and I do declare the following tobe a full, clear, and exact description of theinvention, such as willenable others skilled in the art to which it apperfor this purpose.

To this end the invention consists in the construction,combination, andarrangement of the several parts of the device, as will be hereinaftermore fully described, and particularly pointed out in the claims.

In the accompanying drawings the same reference characters indicate thesame parts of the invention.

Figure 1 is a perspective view with a portion of the front Wall of thewell broken away to show my improved door-operating device. Fig. 2 is afront elevation of the landing-door. Fig. 3 is a similar View of thecontiguous face of the elevator-car. Fig. 4 is a longitudinal sectionthrough the elevator-car. Fig. 5 is a transverse section through thesame. Fig. 6 is a horizontal section through the car and well-shaft.

A denotes the landing-door, which is suspended by the grooved rollers aa on the track-rail B, fixed to the wall of the elevatorshaft, and thelower edge of the door projects below the guard-rail B, fixed below theshaft- S1 C denotes the latch-lever, fulcrumed on the stud-bolt c, fixedin the door A, and it is formed with a vertical arm 0, on which is fixeda laterally-projecting stud-screw 0 carrying a friction-roller c 0denotes the strap-bracket, encompassing the latch-lever and fixedto thedoor to limit the play of the free end of the latch, and 0 denotes theusual keeper, fixed to the shaftwall and projecting into the path of thebillhook on the latch.

D denotes the car, and E a plate vertically hinged thereto and normallyheld against the front of the car by the spiral spring d, and (1'denotes an arm fixed on one end of a shaft d fulcrumed in suitablebrackets fixed to the bottom of the car, and the free end of said armrest-s against the rear face of the hinged plate. The opposite end ofthe shaft d carries an arm d from which a rod (1 extends upward throughthe bottom of the car and terminates in a spring-actuated foot-knob 1),the operation being such that when the footknob D is pressed downwardthe'bell-crank lever (1 will force the free end of the hinged plate E alimited distance from the front of the car, and when the said foot-knobis released its spring d and the spiral spring 61 will restore theseparts to their normal positions.

The front face of the plate E is provided with a grooved track 6, havingflaring ends 6 e to engage the friction-roller c on the latch O as theelevator-car travels up or down. This track e is continuous from end toend and comprises two diverging counterpart sections e and c and whenthe plateE is in its normal position the track is drawn backward and outof the path of the latch-roller 0 but when the car is ascending and thetrack-plate E pressed outwardly from the car the tracksection 6 willencompass the friction-roller, release the latch, and slide the dooropen, and when the car is stopped at a landing the door will be heldopen by the V-shaped pocket formed at the meeting portion of thetracksections, and when the car continues its journey upward thetrack-section a will slide the door to, and as the car descends a likeresult takes place. The knob-rod passes through a guide-plate on thebottom of the car, and the rod is provided with a notch to engage theplate, if necessary, to retain the track-plate in an operative position.

Of course it will be understood that a landing-door is operated onlywhen the conductor has his foot on the knob, and consequently when thetrack-plate is in its normal position against the car the latter willpass alanding without touching the door.

In the accompanying drawings I have shown my invention in the best formnow known to me; but obvious modifications may be made in the detailswithout departing from the spirit of my invention.

Having thus fully described my invention, What I claim as new anduseful, and desire to secure byLetters Patent of the United States, 1s-

1. In combination, the landing-door, the lever-latch carrying theantifriction-roller, and the keeper, fixed to the Wall of theelevator-shaft, the car, the plate hinged to the car, and the diagonal,grooved track carried by said hinged plate, and means for projecting"said track into the path of said roller, substantially as shown anddescribed.

EARL C. AKERS.

Witnesses:

BURT D. OADY, FRANK T. CARLETON.

